Categories: JavaMail

Sending Email With Inline Images JavaMail API

Here is an example to send an HTML email from your machine with inline image. Here we have used SMPT server via which emails are sent to our destination email address.

To send a email with an inline image, the steps followed are:

  1. Get a Session
  2. Create a default MimeMessage object and set From, To, Subject in the message.
  3. Create a MimeMultipart object.
  4. In our example we will have an HTML part and an Image in the email. So first create the HTML content and set it in the multipart object as:
    // first part (the html)
    BodyPart messageBodyPart = new MimeBodyPart();
    String htmlText = "<H1>Hello</H1><img src="cid:image">";
    messageBodyPart.setContent(htmlText, "text/html");
    // add it
    multipart.addBodyPart(messageBodyPart);
    
  5. Next add the image by creating a Datahandler as follows:
    // second part (the image)
    messageBodyPart = new MimeBodyPart();
    DataSource fds = new FileDataSource("D:Javasmailapi100.png");
    messageBodyPart.setDataHandler(new DataHandler(fds));
    messageBodyPart.setHeader("Content-ID", "<image>");
    
  6. Next set the multipart in the message as follows:
    // second part (the image)
    message.setContent(multipart);
    
  7. Send the message using the Transport object.

Example of sending email with Inline Images JavaMail API-

import java.util.Properties;
import javax.activation.DataHandler;
import javax.activation.DataSource;
import javax.activation.FileDataSource;
import javax.mail.BodyPart;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;
 
public class SendInlineImagesInEmail {
 public static void main(String[] args) {
  Properties props = new Properties();
  props.put("mail.smtp.host", "smtp.gmail.com");
  props.put("mail.smtp.socketFactory.port", "465");
  props.put("mail.smtp.socketFactory.class","javax.net.ssl.SSLSocketFactory");
  props.put("mail.smtp.auth", "true");
  props.put("mail.smtp.port", "465");
  final String username="dineshonjava";
  final String password="***********";
  Session session = Session.getDefaultInstance(props,
   new javax.mail.Authenticator() {
    protected PasswordAuthentication getPasswordAuthentication() {
     return new PasswordAuthentication(username,password);
    }
   });
 
  try {
    Message message = new MimeMessage(session);
   message.setFrom(new InternetAddress("dineshonjava@gmail.com"));
   message.setRecipients(Message.RecipientType.TO,InternetAddress.parse("admin@dineshonjava.com"));
   message.setSubject("Welcome Mail Tutorial!!!");
   
  // This mail has 2 part, the BODY and the embedded image
         MimeMultipart multipart = new MimeMultipart("related");
         // first part (the html)
         BodyPart messageBodyPart = new MimeBodyPart();
         String htmlText = "<H1>Hello</H1><img src="cid:image">";
         messageBodyPart.setContent(htmlText, "text/html");
         // add it
         multipart.addBodyPart(messageBodyPart);
         // second part (the image)
         messageBodyPart = new MimeBodyPart();
         DataSource fds = new FileDataSource("D:Javasmailapi100.png");
         messageBodyPart.setDataHandler(new DataHandler(fds));
         messageBodyPart.setHeader("Content-ID", "<image>");
         // add image to the multipart
         multipart.addBodyPart(messageBodyPart);
         // put everything together
         message.setContent(multipart);
   // Send the actual HTML message, as big as you like
  Transport.send(message);
   System.out.println("Mail sent successfully!!!");
 
  } catch (MessagingException e) {
   throw new RuntimeException(e);
  }
 }
}

As we are using the SMTP server provided by the host provider SMTP, we need to authenticate the username and password. The javax.mail.PasswordAuthentication class is used to authenticate the password.

Verify Output

You should see the following message on the command console:

Mail sent successfully!!!

As I’m sending an email to my gmail address through SMTP, the following mail would be received in my gmail account inbox:

 

 

<<Previous <<   || Index ||   >>Next >>
Previous
Next
Dinesh Rajput

Dinesh Rajput is the chief editor of a website Dineshonjava, a technical blog dedicated to the Spring and Java technologies. It has a series of articles related to Java technologies. Dinesh has been a Spring enthusiast since 2008 and is a Pivotal Certified Spring Professional, an author of a book Spring 5 Design Pattern, and a blogger. He has more than 10 years of experience with different aspects of Spring and Java design and development. His core expertise lies in the latest version of Spring Framework, Spring Boot, Spring Security, creating REST APIs, Microservice Architecture, Reactive Pattern, Spring AOP, Design Patterns, Struts, Hibernate, Web Services, Spring Batch, Cassandra, MongoDB, and Web Application Design and Architecture. He is currently working as a technology manager at a leading product and web development company. He worked as a developer and tech lead at the Bennett, Coleman & Co. Ltd and was the first developer in his previous company, Paytm. Dinesh is passionate about the latest Java technologies and loves to write technical blogs related to it. He is a very active member of the Java and Spring community on different forums. When it comes to the Spring Framework and Java, Dinesh tops the list!

Share
Published by
Dinesh Rajput

Recent Posts

Strategy Design Patterns using Lambda

Strategy Design Patterns We can easily create a strategy design pattern using lambda. To implement…

2 years ago

Decorator Pattern using Lambda

Decorator Pattern A decorator pattern allows a user to add new functionality to an existing…

2 years ago

Delegating pattern using lambda

Delegating pattern In software engineering, the delegation pattern is an object-oriented design pattern that allows…

2 years ago

Spring Vs Django- Know The Difference Between The Two

Technology has emerged a lot in the last decade, and now we have artificial intelligence;…

2 years ago

TOP 20 MongoDB INTERVIEW QUESTIONS 2022

Managing a database is becoming increasingly complex now due to the vast amount of data…

2 years ago

Scheduler @Scheduled Annotation Spring Boot

Overview In this article, we will explore Spring Scheduler how we could use it by…

3 years ago